From a single ancestor, about a hundred different types have evolved. 他们从同一个祖先 进化出一百个不同的种
A single meal will last a dragon a month. 巨蜥一餐可以支撑一个月
They take many tons of water into their ballooning throats in a single gulp and sieve out what it contains. 它们一口可吃进几吨的海水 然后再过滤出想要的东西
Nearly a hundred sailfish have surrounded a single school of baitfish. It's very rare to see so many of these hunters in one place. 近100条旗鱼的包围了这群饵鱼 很少能见到上百条的旗鱼在同一个地方出现
It's difficult for a single dolphin to catch the fish. 单只海豚想吃它们是很困难的
This may be the single largest dose of fertilizer in the natural world. 这可能是自然界最大剂量的一只营养针
Each may have just a single chance to impress a female. 只有一个机会来取得雌鸟的芳心
Krill, shrimp like creatures. By weight they're the most abundant animals on the planet. A single swarm can contain two million tons of them 磷虾,一种小型虾类,如果按重量计算 他们是地球上最多量的动物,一群就可达200万吨
A herd can clear a patch of seagrass the size of a football pitch in a single day. 这群儒艮可以在一天内吃掉足球场般大小的海草
In a single night, a colugo might have to travel as far as two miles 在一个晚上,鼯猴可以穿行2英里的路程